"doomsday bomb" meaning in English

{
  "forms": [
    {
      "form": "doomsday bombs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "doomsday bomb (plural doomsday bombs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nuclear warfare",
          "orig": "en:Nuclear warfare",
          "parents": [
            "War",
            "Weapons",
            "Conflict",
            "Military",
            "Violence",
            "Hunting",
            "Tools",
            "Human behaviour",
            "Society",
            "Human activity",
            "Technology",
            "Human",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The doomsday bomb is terrifying. It puts the mightiest nukes to shame.",
          "type": "example"
        }
      ],
      "glosses": [
        "Synonym for doomsday device or doomsday weapon"
      ],
      "id": "en-doomsday_bomb-en-noun-4nmKaN9A",
      "links": [
        [
          "doomsday device",
          "doomsday device"
        ],
        [
          "doomsday weapon",
          "doomsday weapon"
        ]
      ]
    }
  ],
  "word": "doomsday bomb"
}

{
  "forms": [
    {
      "form": "doomsday bombs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "doomsday bomb (plural doomsday bombs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "en:Nuclear warfare"
      ],
      "examples": [
        {
          "text": "The doomsday bomb is terrifying. It puts the mightiest nukes to shame.",
          "type": "example"
        }
      ],
      "glosses": [
        "Synonym for doomsday device or doomsday weapon"
      ],
      "links": [
        [
          "doomsday device",
          "doomsday device"
        ],
        [
          "doomsday weapon",
          "doomsday weapon"
        ]
      ]
    }
  ],
  "word": "doomsday bomb"
}